HEALTH-AND-DISEASES-QUIZ-4

BIOLOGY HEALTH AND DISEASES QUIZ-4

Dear Readers,

NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced..

Q1. Amoebiasis is caused by

•  Plasmodium
•  Entamoeba histolytica
•  House files
•  Contaminated food and water

Solution
(b) Entamoeba histolytica. Amoebiasis is an infection of intestine caused by the parasite Entamoeba histolytica

Q2.Smack is generally taken by

•  Snorting
•  Injection
•  Both (a) and (b)e
•  None of these

Solution
(c) Heroin is a white or brown powder, odourless, bitter, crystalline compound. It can be mixed with water and injected with a needle. Heroin can also be smoked or snorted up the nose

Q3.  Given below the diagrammatic representation of lymph nodes

•  A-Lymph nodes, B-Thymus, C-Lymphatic vessels
•  A-Lymphatic vessels, B-Thyroid, C-Lymph nodes
•  A-Tonsils, B-Peyer’s patchs, C-Lymphatic vessels
•  A-Tonsils, B-Thymus, C-Peyer’s patches

Solution
No solution available

Q4. Infection of pneumonia occurs due to

•  Droplets released from an infected person
•  Released droplets inhaled by healthy person
•  Sharing contaminated objects such as glasses and utensils with an infected person
•  All of the above

Solution
(d) A healthy person acquires the pneumonia infection by inhaling the droplets/aerosols released by an infected person or even by sharing glasses and utensils with an infected person

Q5.A condition that occurs when the immune system mistakenly attacks and destroys healthy body tissue is called

•  Auto-immunity
•  Immunization
•  Allergy
•  Immunodeficiency

Solution
(a) Auto-immunity is the failure of an organism in recognising its own constituent parts as self, which allows an immune response against its own cells and tissues

Q6. The first antibiotic was discovered by
The antibody, therefore, is represented as …F… Here A to F refers to

•  A Fleming
•  W Flemming
•  R Koch
•  Louis Pasteur

Solution
(a) First antibiotic (penicillin) was discovered by Sir Alexander Fleming in 1928 when was working with bacterium Staphylococcus aureus and a fungal contamination apparently inhibited such bacteria.

Q7.Nicotine intake stimulates the …A… to release …B… and …C… into blood circulation. This lead to increase in
…D… and an increase …E… . Here A and E refers to

• A-adrenal gland, B-adrenaline, C-nor-adrenaline, D-blood pressure, E-heart rate
•  A-thyroid gland, B-thyroxine, C-parathyroxine, D-blood pressure, E-heart rate
•  A-adrenal gland, B-thyroxine, C-nor-adrenaline, D-blood pressure, E-heart rate
•  A-gonads, B-adrenaline, C-nor-adrenaline, D-blood pressure, E-heart rate

Solution
(a) A-Adrenal gland, B-Adrenaline, C-Nor-adrenaline, D-Blood pressure, E-Heart rate. Tobacco contains a large number of chemical substances including nicotine, an alkaloid. Nicotine stimulates adrenal gland to release adrenaline and nor-adrenaline into blood circulation, both of which raise blood pressure and increase heart rate. Smoking is associated with increased incidence of cancers of lung, urinary bladder and throat, bronchitis, emphysema, coronary heart diseases, gastric ulcer, etc.

Q8.Kala-azar is caused by

• Trypanosomacruzi
•  Leishmaniadonovani
•  Trypanosomabrucei
•  Trypanosomagambiense

Solution
(b) Leishmaniadonovaniis anintracellular parasite in leucocytes or cells of liver, spleen, bone marrow, lymphatic glands, etc. It causes a serious oriental disease known as ‘Kala-azar’ accompanied by –swellings, fever, enlargement of liver and spleen, the skin colour turning black

Q9.Which of the following statement is not true about HIV/AIDS?

•  HIV is a contagious disease
•  HIV weakened and destroy the immune system
•  Attack the T-cytotoxic cells of immune system
•  AIDS was first reported in 1981

Solution
(c) AIDS is a viral infection. HIV (Human Immuno Deficiency Virus), the virus that causes AIDS, was first discovered in 1981 in a remote area of Central Africa

Q10. Regarding pathogens consider the following statements I. A pathogen or an infectious agent is a microorganism, such as a virus, bacterium, fungus that causes disease in its host
II. These pathogens multiply in our body and interfere with the normal vital activities, resulting in morphological and functional damage
Which of the following statement (s) is/are correct?

•  Streptomyces - Antibiotic
•  Serratia - Drug Addiction
•  Spirulina - Single cell protein
•  Rhizobium- Biofertilizer

Solution
(c) A pathogen is a microorganisms, such as a virus, bacteria, fungus that causes disease in its host. These pathogens multiply in our body and interfere with the normal vital activities, resulting in morphological and functional damage